65 (Junior) Systems Engineer

Hypersonica

Hypersonica

Software Engineering

London, UK

Posted on May 6, 2026
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Help Build Europe's Hypersonic Capability
At Hypersonica, we’re redefining what’s possible in European defence technology. We exist to deliver speed, resilience, and technological independence at a pace that sets a new standard. We are a small, elite team working on problems that matter, and solving them fast.
By joining Hypersonica, you’re not stepping into a predefined role. You’re joining a talent dense environment where every individual shapes the direction of the company. Our philosophy is to hire a small number of exceptional people with broad, deep technical capability, strong judgement, and the ability to operate autonomously.
We hire for talent, not rigid boxes. This role represents a business need, but the way it evolves will be shaped by the individual. If you’ve achieved what others said was impossible, or you bring a unique combination of skills that doesn’t fit a traditional mould, we want to hear from you. The work you do here directly contributes to Europe’s technological independence.

What you'll do

    • Support the formalisation of system and subsystem requirements, translating high‑level stakeholder objectives into clear, precise, verifiable, and traceable technical requirements.

    • Own defined system or subsystem requirement sets, ensuring scope, intent, and interfaces are unambiguous and well documented.

    • Apply process discipline to systems engineering, ensuring every feature is fully defined and traceable before detailed design begins.

    • Build and maintain requirements traceability, linking stakeholder needs, technical requirements, verification activities, and test evidence.

    • Own the verification process for assigned systems or subsystems, ensuring verification logic is defined early and remains aligned as designs evolve.

    • Develop and maintain design and systems engineering documentation, keeping the system definition consistent, current, and auditable.

    • Support Verification & Validation (V&V) planning, ensuring that appropriate test strategies exist for each requirement.

    • Work closely with Lead and Senior Systems Engineers, supporting system architecture decisions with structured requirements and documentation.

    • Apply recognised aerospace and defence systems engineering standards, ensuring consistency with regulated, safety‑critical environments.

    • Act as a quality gate for system definition, identifying gaps, ambiguities, and inconsistencies before they become downstream issues.

Who you are

    • An early‑career Systems Engineer with a strong interest in system definition, requirements, and engineering discipline.

    • Comfortable working with formal requirements, including writing, structuring, and maintaining technical requirement sets.

    • Familiar with requirements traceability, V&V concepts, and system lifecycle thinking, either through industry or academic experience.

    • Detail‑oriented and methodical, with a strong instinct for clarity, consistency, and completeness.

    • Able to work effectively in support of senior and lead engineers, contributing structured inputs rather than operating in isolation.

    • Comfortable producing and maintaining engineering documentation that others depend on to design and test systems.

    • Familiar with, or keen to learn, aerospace and defence engineering standards and regulated development environments.

    • Analytical and pragmatic, able to translate abstract stakeholder needs into concrete, testable statements.

    • Motivated by learning how complex, safety‑critical systems are defined, validated, and delivered.

    • Interested in growing into broader system architecture or technical leadership roles over time through strong fundamentals.

Security and Eligibility Requirement

    Due to the nature of the work with the UK MOD, applicants must be a British Citizen (or Dual UK national with British citizenship) and eligible for UK Security Clearance (SC) and, where required, Developed Vetting (DV)

What we offer

    • A mission driven environment with the opportunity to work on one of Europe’s most consequential defence challenges, with direct impact on sovereign capability and security.

    • Daily collaboration with top experts across engineering, operations, and defence, with real opportunity to learn from the best, contribute, and grow.

    • High ownership and autonomy; no time tracking, no micromanagement, just clear objectives and accountability for outcomes.

    • A fast paced environment where good ideas are implemented quickly, and feedback from test and flight drives real decisions.

    • A culture that values clarity, integrity, and excellence, and supports people who take initiative and push boundaries responsibly.

    • Competitive compensation and real share options aligned to responsibility and impact, not tenure or hierarchy.

At Hypersonica, every hire raises the bar. We are deliberately small, intensely capable, and deeply mission-driven. If this role feels like a strong fit, or if you believe you bring something exceptional that goes beyond the description, we encourage you to apply.
Hypersonica is an equal-opportunity employer and assesses candidates solely on merit, capability, and potential.
You can apply directly to this role or reach out to Nathan Sweeney, Head of Talent. We review every application and aim to respond to all candidates within two weeks, whether the answer is yes or no.
Apply now
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